CVE-2020-13494: Vulnerability Analysis & Exploit Details

Status: Analyzed - Last modified: 05-10-2022 Published: 02-12-2020

CVE-2020-13494
Vulnerability Scoring

5.5
/10

Attack Complexity Details

  • Attack Complexity: Low Impact
  • Attack Vector: LOCAL
  • Privileges Required: None
  • Scope: UNCHANGED
  • User Interaction: REQUIRED

CIA Impact Definition

  • Confidentiality: HIGH IMPACT
  • Integrity:
  • Availability:

CVE-2020-13494 Vulnerability Summary

A heap overflow vulnerability exists in the Pixar OpenUSD 20.05 parsing of compressed string tokens in binary USD files. A specially crafted malformed file can trigger a heap overflow which can result in out of bounds memory access which could lead to information disclosure. This vulnerability could be used to bypass mitigations and aid further exploitation. To trigger this vulnerability, victim needs to access an attacker-provided malformed file.

Access Complexity Graph for CVE-2020-13494

Impact Analysis for CVE-2020-13494

CVE-2020-13494: Detailed Information and External References

EPSS

0.00125

EPSS %

0.47996

References

0.00125

CWE

CWE-122

CAPEC

0.00125

  • Forced Integer Overflow: This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.

Vulnerable Configurations

  • cpe:2.3:a:pixar:openusd:20.05:*:*:*:*:*:*:*
    cpe:2.3:a:pixar:openusd:20.05:*:*:*:*:*:*:*
  • cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
    cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

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